| Issue |
Natl Sci Open
Volume 5, Number 1, 2026
Special Topic: Intelligent Materials and Devices
|
|
|---|---|---|
| Article Number | 20250049 | |
| Number of page(s) | 31 | |
| Section | Materials Science | |
| DOI | https://doi.org/10.1360/nso/20250049 | |
| Published online | 05 November 2025 | |
REVIEW
Advancements in hollow-core anti-resonant fiber for gas sensing applications
1
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
2
State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fibre and Cable Joint Stock Limited Company (YOFC), Wuhan 430073, China
3
Institute of Special Glass Fiber & Optoelectronic Functional Materials, China Building Materials Academy, Beijing 100024, China
4
State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi’an 710119, China
5
Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Universitéde Rennes, Rennes 35042, France
* Corresponding authors (emails: This email address is being protected from spambots. You need JavaScript enabled to view it.
(Lei Zhang); This email address is being protected from spambots. You need JavaScript enabled to view it.
(Yinsheng Xu))
Received:
15
September
2025
Revised:
30
October
2025
Accepted:
31
October
2025
Abstract
Hollow-core anti-resonant fibers (HC-ARFs) have emerged as a transformative platform for high-performance gas sensing. This review systematically summarizes recent advances in HC-ARF-based gas sensors. It begins by elucidating the light-guiding principles of HC-ARFs. Subsequently, key strategies for enhancing sensor performance are discussed, encompassing structural optimization of the fiber, selection of mid-infrared substrate materials, femtosecond laser fabrication of microchannels to accelerate gas diffusion, and surface modification with functional materials for improved selectivity. The core of the review analyzes representative sensing techniques integrated with HC-ARFs, including direct absorption spectroscopy (DAS) and its highly sensitive derivatives, photothermal and photoacoustic spectroscopy, as well as multiplexed Raman spectroscopy. Finally, current challenges and future prospects are outlined, highlighting the potential of HC-ARF sensors to achieve ultra-sensitive, rapid, and compact gas detection for various applications.
Key words: HC-ARF / fiber optics / direct absorption spectroscopy / laser spectroscopy / gas sensing
Contributed equally to this work.
© The Author(s) 2025. Published by Science Press and EDP Sciences.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.